gitlab update to 9.3.0-bb.0

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/gitlab/-/blob/9.3.0-bb.0/CHANGELOG.md

Package MR

big-bang/product/packages/gitlab!404 (merged)

For Issue

Closes big-bang/product/packages/gitlab#347 (closed)

Upgrade Notices

N/A